Child gastric lavage device with countable intake and output

Abstract

The utility model discloses a child gastric lavage device of can count in -out quantity, including stomach tube, suction pipe, liquid injection device, suction device, ultrasonic wave clamp formula flowmeter, outer clamping formula electromagnetic flowmeter and host computer, and stomach tube is equipped with three -way valve, one end of suction pipe is connected to three -way valve, liquid injection device includes liquid injection container and manual pressure -increasing device, and the liquid outlet of liquid injection container is connected with stomach tube, and manual pressure -increasing device is connected with liquid injection container, to the liquid in liquid injection container with pressure, suction device includes collection container and negative pressure device, and collection container is connected with the other end of suction pipe, and negative pressure device is connected with collection container, ultrasonic wave clamp formula flowmeter is established at one end of stomach tube adjacent liquid injection device, and outer clamping formula electromagnetic flowmeter is clamped in the suction pipe, and host computer is connected with ultrasonic wave clamp formula flowmeter and outer clamping formula electromagnetic flowmeter, to handle and show liquid injection amount and liquid suction amount. The utility model realizes the accurate measurement to liquid injection amount and suction amount, and shows data directly through host computer.

Description

TECHNICAL FIELD

[0001] The utility model relates to a medical device for paediatrics, especially to a child gastric lavage device capable of counting the amount of liquid in and out. BACKGROUND

[0002] Child gastric lavage is one of the important means for treating acute poisoning and other diseases in clinic. The traditional child gastric lavage operation usually adopts the following mode: the medical staff inserts the proximal end of the gastric tube into the stomach of the child through the mouth or the nasal cavity, while the distal end (the end located outside the body) of the gastric tube is connected to a syringe. During the gastric lavage process, the medical staff first injects an appropriate amount of normal saline or other gastric lavage liquid into the stomach through the syringe, and then draws out the contents of the stomach through the syringe, and so on repeatedly until the contents of the stomach are relatively clean.

[0003] However, this traditional gastric lavage method has obvious defects. First, the medical staff cannot accurately measure the amount of liquid injected into the stomach and the amount of liquid drawn out each time, but can only roughly estimate it by the scale of the syringe. Second, due to the need to frequently change the syringe or repeatedly perform the suction and injection actions during the operation process, the gastric lavage efficiency is low, and liquid measurement errors are easily accumulated. SUMMARY

[0004] The utility model aims at at least one of the technical problems in the related art to some extent. Therefore, the purpose of the utility model is to provide a child gastric lavage device capable of counting the amount of liquid in and out.

[0005] To achieve the above-mentioned purpose, according to the child gastric lavage device capable of counting the amount of liquid in and out according to the utility model embodiment, it comprises: a gastric tube, a three-way valve is arranged on the gastric tube; a suction tube, one end of the suction tube is connected to the three-way valve; a liquid injection device, the liquid injection device comprises a liquid injection container and a manual pressure device, the liquid outlet of the liquid injection container is connected with the gastric tube, and the manual pressure device is connected with the liquid injection container to apply pressure to the liquid in the liquid injection container to promote the liquid to be injected into the stomach of the patient through the gastric tube; a suction device, the suction device comprises a collection container and a negative pressure device, the other end of the suction tube is connected with the collection container, and the negative pressure device is connected with the collection container to generate negative pressure to draw out the contents of the stomach to the collection container; an ultrasonic clamp-on flowmeter, the ultrasonic clamp-on flowmeter is arranged on the gastric tube adjacent to one end of the liquid injection device to measure the liquid injection amount; an external clamp-on electromagnetic flowmeter, the external clamp-on electromagnetic flowmeter is clamped on the suction tube to measure the liquid suction amount; The host unit is connected to the ultrasonic clamp flow meter and the external clamp electromagnetic flow meter via signal cables to process and display the liquid injection volume and liquid extraction volume.

[0006] The pediatric gastric lavage device with volume measurement capability provided in this embodiment of the invention achieves precise measurement of the infused and aspirated volumes through an ultrasonic clamp-on flow meter and an external clamp-on electromagnetic flow meter. The data is displayed intuitively on the main unit, significantly improving the accuracy and convenience of volume monitoring during gastric lavage. Flow monitoring effectively prevents complications caused by over-infusion or excessive aspiration, making it particularly suitable for gastric lavage procedures in pediatric settings where precise treatment and safety requirements are high. Furthermore, both the ultrasonic clamp-on flow meter and the external clamp-on electromagnetic flow meter are non-invasive, offering enhanced safety and avoiding the risk of cross-infection. In addition, the three-way valve, combined with a bidirectional controllable structure for manual pressurization and negative pressure devices, eliminates the need for repeated plugging and unplugging, further improving the convenience and efficiency of the gastric lavage procedure.

[0007] In addition, the pediatric gastric lavage device capable of measuring intake and output according to the above embodiments of this utility model may also have the following additional technical features: According to one embodiment of the present invention, the suction tube is further provided with a buffer bladder, which is located between the three-way valve and the external clamp-on electromagnetic flowmeter.

[0008] According to one embodiment of the present invention, the liquid injection container includes a liquid storage cylinder and a sealing cap. The liquid outlet is located at the lower end of the liquid storage cylinder and is sealed to the gastric tube. The sealing cap is sealed to the upper end of the liquid storage cylinder. The sealing cap is provided with a quick-connect interface, which is connected to the manual pressurization device.

[0009] According to one embodiment of the present invention, the manual pressurization device is an accordion-type squeeze bottle, the lower end of which has a quick connector that connects to the quick interface, and the upper end of which is provided with a one-way valve for unidirectional intake of external air.

[0010] According to one embodiment of the present invention, the top of the collection container has a first interface and a second interface, the first interface being sealed to the suction tube; the negative pressure device is a micro diaphragm pump, the micro diaphragm pump being connected to the second interface through a negative pressure tube.

[0011] According to one embodiment of the present invention, the negative pressure device is a micro peristaltic pump, which is mounted on the suction tube.

[0012] According to one embodiment of the present invention, the host includes a data processing module, a display screen, and a wireless transmission module. The data processing module is used to process the data transmitted by the ultrasonic clamp flow meter and the external clamp electromagnetic flow meter; the display screen is used to display the liquid injection volume and liquid extraction volume in real time; and the wireless transmission module is used to transmit the inflow and outflow data to a mobile terminal or a hospital information system.

[0013] According to one embodiment of the present invention, the gastric tube is provided with a tube clamp, which is located between the three-way valve and the injection container to regulate the liquid flow rate during the injection process.

[0014] According to one embodiment of the present invention, the collection container is provided with a filter screen, which is detachably suspended inside the collection container, and the mesh diameter of the filter screen is 0.5-1.2mm.

[0015] According to one embodiment of the present invention, a pressure relief valve is provided at the connection between the injection container and the gastric tube, which automatically opens to release pressure when the pipeline pressure is detected to exceed a predetermined value.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the pediatric gastric lavage device that can measure intake and output in an embodiment of this utility model.

[0019] Figure label: 10. Gastric tube; 11. Three-way valve; 12. Pipe clamp; 20. Suction tube; 21. Buffer bag; 30. Liquid injection device; 301. Liquid injection container; 301a, Liquid Storage Cylinder; 301b, Sealing cap; 3011. Liquid outlet; 302. Manual pressurization device; 40. Suction device; 401. Collection container; 401a, First Interface; 401b, Second Interface; 402. Negative pressure device; 403. Negative pressure pipe; 50. Ultrasonic clamp flow meter; 60. External clamp-on electromagnetic flowmeter; 70. Host computer.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The following describes in detail, with reference to the accompanying drawings, a pediatric gastric lavage device capable of measuring intake and output of the present invention.

[0027] Reference Figure 1 As shown, the pediatric gastric lavage device with a capacity to measure intake and output provided according to an embodiment of the present invention includes a gastric tube 10, a suction tube 20, an injection device 30, a suction device 40, an ultrasonic clamp-on flow meter 50, and an external clamp-on electromagnetic flow meter 60.

[0028] Specifically, the gastric tube 10 is equipped with a three-way valve 11. The gastric tube 10 is typically made of polyurethane or medical-grade silicone. The proximal end of the gastric tube 10 is a smooth, open end for insertion into the child's stomach. The gastric tube 10 is connected to the three-way valve 11. The three-way valve 11 allows for fluid channel switching, connecting the gastric tube 10, the aspiration tube 20, and the injection device 30. By rotating the switch, the direction of fluid flow can be controlled, thereby switching between injection and aspiration functions.

[0029] One end of the suction tube 20 is connected to the three-way valve 11. The suction tube 20 is made of medical-grade silicone tubing of the same material as the gastric tube 10, and one end is connected to an interface of the three-way valve 11 via a connector. The suction tube 20 is used to extract the contents of the patient's stomach under the negative pressure of the suction device 40.

[0030] The infusion device 30 includes an infusion container 301 and a manual pressurization device 302. The outlet 3011 of the infusion container 301 is connected to the gastric tube 10. The infusion container 301 is made of transparent medical-grade polycarbonate material, with a volume of 300ml to 800ml. Graduation marks are provided on the outer wall, allowing for direct observation of the remaining liquid volume within the infusion container 301. During use, physiological saline or other gastric lavage solutions can be added to the infusion container 301.

[0031] A manual pressurizing device 302 is connected to the injection container 301 to apply pressure to the liquid inside the injection container 301, causing the liquid to be injected into the patient's stomach through the gastric tube 10. When the manual pressurizing device 302 pressurizes the injection container 301, the air pressure inside the injection container 301 increases, and the liquid inside the injection container 301 flows from the outlet 3011 into the gastric tube 10 under the gas pressure, and is then injected into the patient's stomach through the gastric tube 10.

[0032] The suction device 40 includes a collection container 401 and a negative pressure device 402. The collection container 401 is connected to the other end of the suction tube 20. The collection container 401 is a sealed container made of transparent polycarbonate material with a volume of 500ml to 1000ml. Graduation marks may also be provided on the collection container 401 for visual observation of the amount of liquid aspirated. The negative pressure device 402 is connected to the collection container 401 and is used to generate negative pressure to draw the contents of the stomach into the collection container 401.

[0033] An ultrasonic clamp-on flow meter 50 is fitted onto the gastric tube 10 near the end of the injection device 30 to measure the volume of liquid injected. An external clamp-on electromagnetic flow meter 60 is clamped onto the suction tube 20 to measure the volume of liquid withdrawn. In other words, the volume of liquid injected is monitored in real time by the ultrasonic clamp-on flow meter 50. This ultrasonic clamp-on flow meter 50 uses non-contact measurement, tightly covering the outer wall of the gastric tube 10, and calculates the flow rate by the time difference between transmitting and receiving ultrasonic signals, resulting in high measurement accuracy. The volume of liquid withdrawn is monitored by the external clamp-on electromagnetic flow meter 60, which is clamped to the outer surface of the suction tube 20 and detects the liquid flow rate based on the principle of Faraday's electromagnetic induction.

[0034] The host unit 70 is connected to the ultrasonic clamp-on flow meter 50 and the external clamp-on electromagnetic flow meter 60 via signal cables to process and display the fluid injection and extraction volumes. The data collected by the ultrasonic clamp-on flow meter 50 and the external clamp-on electromagnetic flow meter 60 are processed by the host unit 70 to calculate and display the fluid injection and extraction volumes, enabling medical personnel to accurately monitor the fluid inflow and outflow data during gastric lavage.

[0035] During gastric lavage, the three-way valve 11 is first switched to the injection channel, and the manual pressurization device 302 is operated to inject gastric lavage fluid under pressure. The lavage fluid is injected into the patient's stomach through the gastric tube 10, and the ultrasonic clamp-on flow meter 50 simultaneously records the fluid injection volume. After a single injection is completed, the three-way valve 11 is switched to the suction channel, and the negative pressure device 402 is activated to generate negative pressure suction, drawing the gastric contents into the collection container 401 through the gastric tube 10, the three-way valve 11, and the suction tube 20. The external clamp-on electromagnetic flow meter 60 records the suction volume. The main unit 70 dynamically calculates the fluid inflow and outflow data and displays the output.

[0036] According to the embodiments of this utility model, the pediatric gastric lavage device capable of measuring inflow and outflow utilizes an ultrasonic clamp-on flow meter 50 and an external clamp-on electromagnetic flow meter 60 to achieve precise measurement of the infused and aspirated volumes. The data is displayed intuitively on the main unit 70, significantly improving the accuracy and convenience of monitoring inflow and outflow during gastric lavage. Flow monitoring effectively prevents complications caused by over-infusion or excessive aspiration, making it particularly suitable for gastric lavage procedures in pediatric settings where precise treatment and safety requirements are high. Furthermore, both the ultrasonic clamp-on flow meter 50 and the external clamp-on electromagnetic flow meter 60 are non-invasive flow meters, offering enhanced safety and avoiding the risk of cross-infection. In addition, the three-way valve 11, combined with the bidirectional controllable structure of the manual pressurization and negative pressure device 402, eliminates the need for repeated plugging and unplugging, further improving the convenience and efficiency of the gastric lavage procedure.

[0037] In one embodiment of this utility model, the suction tube 20 is further provided with a buffer bladder 21, which is located between the three-way valve 11 and the external clamp-on electromagnetic flowmeter 60. Exemplarily, the buffer bladder 21 is made of medical-grade elastic material, has a circular structure, a volume of 50ml to 100ml, and is integrated with the suction tube 20.

[0038] The buffer bladder 21 acts as a buffer for fluid flow during operation. When the gastric lavage procedure is switched to suction mode, the negative pressure device 402 is activated to generate negative pressure. After the gastric contents enter the suction tube 20 through the gastric tube 10 and the three-way valve 11, they first enter the buffer bladder 21. Since the extraction of gastric contents is often uneven, large solid particles, gases, or liquids may pass through alternately. This uneven flow can interfere with the measurement accuracy of the flow meter. The buffer bladder 21 can temporarily contain these uneven contents and, through its elastic properties, ensures a more stable flow when the fluid passes through the clamp-on electromagnetic flow meter 60.

[0039] Furthermore, the buffer bladder 21 effectively prevents solid substances in the stomach from interfering with the measurement of the clamp-on electromagnetic flowmeter 60. When the extracted material contains large particles or residue, these substances can be temporarily retained in the buffer bladder 21, slowing their passage speed and preventing direct impact on the flowmeter's measurement area, thereby improving the accuracy of the flowmeter measurement. At the same time, the presence of the buffer bladder 21 makes the fluid velocity more uniform when passing through the measurement point, reducing measurement errors that may be caused by sudden changes in flow velocity.

[0040] In one embodiment of the present invention, the liquid injection container 301 includes a liquid storage cylinder 301a and a sealing cap 301b. The liquid outlet 3011 is located at the lower end of the liquid storage cylinder 301a and is sealed to the gastric tube 10. The liquid outlet 3011 can be a standard Luer connector, which is matched with the connection end of the gastric tube 10 and sealed by rotation and locking.

[0041] The sealing cap 301b is sealed to the upper end of the liquid storage cylinder 301a, for example, by means of a threaded connection, ensuring a reliable seal. The sealing cap 301b is provided with a quick-connect interface, which connects to the manual pressurization device 302. The quick-connect interface can be a threaded interface or a plug-in interface, etc.

[0042] In this embodiment, the injection container 301, through its combination of a storage cylinder 301a and a sealing cap 301b, and the configuration of the outlet 3011 and a quick-connect interface, achieves both high efficiency and safety in the gastric lavage fluid injection process. The sealing cap 301b ensures that the storage cylinder 301a is sealed, allowing for precise injection when pressurized using the manual pressurization device 302. Furthermore, when gastric lavage fluid needs to be added, simply open the sealing cap 301b to add it, making it convenient to use. The quick-connect interface on the sealing cap 301b, which connects to the manual pressurization device 302, further enhances the ease of pressurization operation.

[0043] In one embodiment of this utility model, the manual pressurizing device 302 is an accordion-style squeeze bottle. The lower end of the accordion-style squeeze bottle has a quick connector that connects to the quick interface, and the upper end of the accordion-style squeeze bottle is provided with a one-way valve for unidirectional intake of external air. Exemplarily, the accordion-style squeeze bottle is made of medical-grade thermoplastic elastomer (TPE) material and is cylindrical in shape. The cylinder wall of the accordion-style squeeze bottle is designed with a multi-layered accordion structure, containing multiple concentric annular pleats.

[0044] The accordion-style squeeze bottle is equipped with a one-way air inlet valve at the top. When the accordion-style squeeze bottle is released, external air can be quickly introduced into it, but it can be completely sealed and leak-proof when squeezed, ensuring that air can be squeezed into the liquid storage cylinder 301a to achieve pressurization.

[0045] During use, the operator uses a squeezing action to expel internal air to the filling container 301 via a quick connector. After the squeezing is released, the one-way valve automatically opens, allowing external air to quickly enter the squeezing bottle. The bottle body then returns to its original shape under its own elasticity, ready for the next squeezing.

[0046] In this embodiment, an accordion-style squeeze bottle is used, which can provide a larger gas output. The squeezing operation is simple and reliable, and multiple squeezes can be performed continuously to ensure the reliable and stable liquid injection operation.

[0047] In one embodiment of the present invention, the top of the collection container 401 has a first interface 401a and a second interface 401b, the first interface 401a being sealed to the suction tube 20; the negative pressure device 402 is a micro diaphragm pump, which is connected to the second interface 401b via a negative pressure tube 403.

[0048] The miniature diaphragm pump employs a medical-grade electric diaphragm negative pressure device 402. In operation, the negative pressure generated by the miniature diaphragm pump is transmitted through the negative pressure tube 403 to the internal space of the collection container 401, creating a negative pressure environment within the container. After the three-way valve 11 switches to the suction channel, the gastric contents, under the influence of the pressure difference between the inside and outside of the collection container 401, flow sequentially through the gastric tube 10, the three-way valve 11, and the suction tube 20, ultimately being collected in the collection container 401. This indirect suction method avoids direct contact between the gastric contents and the diaphragm pump. The collection container 401 is equipped with graduation marks, which, combined with the precise measurement of the clamp-on electromagnetic flowmeter 60, allows medical personnel to intuitively monitor the volume of fluid suctioned.

[0049] In another embodiment of this utility model, the negative pressure device 402 is a micro peristaltic pump, which is mounted on the suction pipe 20.

[0050] When the motor of the micro peristaltic pump drives the rotating shaft to rotate, the pressure rollers squeeze the suction tube 20 in sequence, forming a propulsive force, which causes the liquid to flow in a direction within the suction tube 20, thus realizing the suction function.

[0051] Because the miniature peristaltic pump generates its driving force by mechanically squeezing the suction tube 20, rather than relying on air pressure differences, the suction force on the stomach is uniform and continuous. Compared to the negative pressure generated by a miniature diaphragm pump, the suction provided by the miniature peristaltic pump is gentler and more stable, making it particularly suitable for gastric lavage procedures on infants and young children. Since the miniature peristaltic pump only contacts the outer surface of the suction tube 20 and does not directly contact the liquid, it offers higher hygiene and safety.

[0052] In one embodiment of this utility model, the host 70 includes a data processing module, a display screen, and a wireless transmission module. The data processing module is used to process the data transmitted by the ultrasonic clamp flow meter 50 and the external clamp electromagnetic flow meter 60. For example, the data processing module can include an acquisition circuit, an amplifier, a filter circuit, and a digital-to-analog conversion circuit. The signal acquisition circuit receives the analog signals from the ultrasonic clamp flow meter 50 and the external clamp electromagnetic flow meter 60. After filtering, amplification, and AD conversion processing by the filter circuit, amplifier, and analog-to-digital conversion circuit in sequence, the flow rate is calculated to obtain the liquid inflow and outflow data.

[0053] The display screen shows the real-time volume of fluid injected and withdrawn, allowing medical staff to monitor fluid intake and output. The wireless transmission module transmits this data to a mobile terminal or hospital information system. This module can use Bluetooth or Wi-Fi. The Bluetooth module primarily enables short-range communication with medical staff's mobile terminals, allowing them to receive real-time data during gastric lavage via an app. The Wi-Fi module interfaces with the hospital information system (HIS), uploading fluid intake and output data in real-time and automatically generating electronic records. This reduces manual recording work for medical staff and improves the accuracy and timeliness of medical records.

[0054] In addition, the main unit 70 is powered by a built-in lithium-ion battery, which supports more than 10 hours of continuous operation to meet the needs of gastric lavage.

[0055] In this embodiment, the combination of a data processing module, a display screen, and a wireless transmission module enables the calculation, intuitive display, and remote transmission of fluid intake and output during gastric lavage. This not only significantly improves the accuracy and safety of gastric lavage treatment in children but also reduces the workload of medical staff and optimizes clinical workflows through digitalization and informatization. Simultaneously, the wireless transmission function enables the integration of gastric lavage data with the hospital information system, providing reliable data for electronic medical records and clinical decision-making.

[0056] In one embodiment of this utility model, a tube clamp 12 is provided on the gastric tube 10. The tube clamp 12 is located between the three-way valve 11 and the injection container 301 to adjust the liquid flow rate during the injection process.

[0057] During gastric lavage, medical staff can control the infusion rate by observing the scale on the infusion container 301 and the real-time flow data provided by the ultrasonic clamp flow meter 50, combined with the adjustment of the tube clamp 12. When it is necessary to slow down the infusion rate, medical staff can adjust the tube clamp 12 to a smaller opening position; when rapid infusion is required, it can be adjusted to a larger opening position. This adjustable design makes the gastric lavage process more adaptable to the individual needs of children, improving the flexibility and safety of the operation.

[0058] In one embodiment of this invention, a filter screen is provided inside the collection container 401. The filter screen is detachably suspended inside the collection container 401, and the mesh diameter of the filter screen is 0.5-1.2 mm. This size range can effectively intercept larger particles and food residues that may be present in the stomach, while not obstructing the normal flow of liquid.

[0059] During gastric lavage, the contents of the child's stomach first enter the collection container 401 through the suction tube 20, and then are separated by a filter. Liquids and smaller particles can pass smoothly through the mesh into the lower part of the collection container 401, while larger solids are trapped on the filter. This design not only facilitates the observation and analysis of the properties of the gastric contents by medical staff, but also makes the measurement of the amount of liquid aspirated more accurate. After the gastric lavage is completed, medical staff can easily remove the filter for cleaning or replacement, facilitating further examination and analysis of the collected solids.

[0060] In one embodiment of this utility model, a pressure relief valve is provided at the connection between the liquid injection container 301 and the gastric tube 10, which automatically opens to release pressure when the pipeline pressure is detected to exceed a predetermined value.

[0061] During gastric lavage, especially when using the manual pressurization device 302 for fluid injection, a sudden increase in pressure within the tubing may occur if medical staff operate too quickly or with too much force. In this case, the pressure relief valve immediately senses this pressure change and automatically opens to release pressure before the pressure reaches a preset threshold, expelling excess gas and maintaining a safe injection pressure range. This design is particularly suitable for gastric lavage procedures in pediatric patients because infants' stomachs are more fragile and more sensitive to pressure changes, requiring higher safety standards for the procedure. Simultaneously, the pressure relief valve effectively prevents pressure buildup in case of tubing blockage, avoiding tubing connections from detaching or rupturing due to excessive internal pressure, thus improving the safety of its use.

[0062] In some other embodiments of this utility model, the gastric tube can be connected to the three-way valve 11 via a quick connector 101. After use, the gastric tube 10 can be discarded, while other parts can be reused after disinfection.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A pediatric gastric lavage device capable of measuring intake and output, characterized in that, include: A gastric tube, wherein a three-way valve is provided on the gastric tube; A suction tube, one end of which is connected to the three-way valve; The infusion device includes an infusion container and a manual pressurization device. The outlet of the infusion container is connected to the gastric tube, and the manual pressurization device is connected to the infusion container to apply pressure to the liquid in the infusion container to induce the liquid to be injected into the patient's stomach through the gastric tube. A suction device, comprising a collection container and a negative pressure device, wherein the collection container is connected to the other end of the suction tube and the negative pressure device is connected to the collection container, for use in generating negative pressure to draw the contents of the stomach into the collection container. An ultrasonic clamp-on flow meter is fitted onto the gastric tube at one end near the injection device to measure the volume of liquid injected. An external clamp-on electromagnetic flow meter is clamped onto the suction pipe to measure the amount of liquid drawn out. The host unit is connected to the ultrasonic clamp flow meter and the external clamp electromagnetic flow meter via signal cables to process and display the liquid injection volume and liquid extraction volume.

2. The pediatric gastric lavage device capable of measuring intake and output according to claim 1, characterized in that, The suction tube is also equipped with a buffer bladder, which is located between the three-way valve and the external clamp-on electromagnetic flowmeter.

3. The pediatric gastric lavage device capable of measuring intake and output according to claim 1, characterized in that, The injection container includes a reservoir and a sealing cap. The outlet is located at the lower end of the reservoir and is sealed to the gastric tube. The sealing cap is sealed to the upper end of the reservoir. The sealing cap is provided with a quick-connect interface, which is connected to the manual pressurization device.

4. The pediatric gastric lavage device capable of measuring intake and output according to claim 3, characterized in that, The manual pressurization device is an accordion-type squeeze bottle. The lower end of the accordion-type squeeze bottle has a quick connector that connects to the quick interface, and the upper end of the accordion-type squeeze bottle is provided with a one-way valve for unidirectional intake of external air.

5. The pediatric gastric lavage device capable of measuring intake and output according to claim 1, characterized in that, The top of the collection container has a first interface and a second interface, the first interface being sealed to the suction tube; the negative pressure device is a micro diaphragm pump, which is connected to the second interface via a negative pressure tube.

6. The pediatric gastric lavage device capable of measuring intake and output according to claim 1, characterized in that, The negative pressure device is a miniature peristaltic pump, which is installed on the suction pipe.

7. The pediatric gastric lavage device capable of measuring intake and output according to claim 1, characterized in that, The host includes a data processing module, a display screen, and a wireless transmission module. The data processing module is used to process the data transmitted by the ultrasonic clamp flow meter and the external clamp electromagnetic flow meter. The display screen is used to display the liquid injection volume and liquid extraction volume in real time. The wireless transmission module is used to transmit the inflow and outflow data to a mobile terminal or a hospital information system.

8. The pediatric gastric lavage device capable of measuring intake and output according to claim 1, characterized in that, The gastric tube is equipped with a clamp, which is located between the three-way valve and the injection container to regulate the liquid flow rate during the injection process.

9. The pediatric gastric lavage device capable of measuring intake and output according to claim 1, characterized in that, The collection container is equipped with a filter screen, which is detachably suspended inside the collection container, and the mesh diameter of the filter screen is 0.5-1.2mm.

10. The pediatric gastric lavage device capable of measuring intake and output according to claim 1, characterized in that, The connection between the injection container and the gastric tube is equipped with a pressure relief valve, which automatically opens to release pressure when the pipeline pressure exceeds a predetermined value.

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